Motorcycle air cleaner



FIG. 1 is a front elevation view of a motorcycle air cleaner showing mynew design;

FIG. 2 is a left side elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a rear elevation view thereof.

The ornamental design for a motorcycle air cleaner, as shown.